/******************************************************************
 *
 *  CyberHTTP for Java
 *
 *  Copyright (C) Satoshi Konno 2002-2004
 *
 *  File: HTTPSocket.java
 *
 *  Revision;
 *
 *  12/12/02
 *    - first revision.
 *  03/11/04
 *    - Added the following methods about chunk size.
 *      setChunkSize(), getChunkSize().
 *  08/26/04
 *    - Added a isOnlyHeader to post().
 *  03/02/05
 *    - Changed post() to suppot chunked stream.
 *  06/10/05
 *    - Changed post() to add a Date headedr to the HTTPResponse before the posting.
 *  07/07/05
 *    - Lee Peik Feng <pflee@users.sourceforge.net>
 *    - Fixed post() to output the chunk size as a hex string.
 *
 ******************************************************************/

package org.cybergarage.http;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Calendar;



public class HTTPSocket
{

    private static final String TAG = "org.cybergarage.http.HTTPSocket";

    // //////////////////////////////////////////////
    // Constructor
    // //////////////////////////////////////////////

    public HTTPSocket(Socket socket)
    {
        setSocket(socket);
        open();
    }


    public HTTPSocket(HTTPSocket socket)
    {
        setSocket(socket.getSocket());
        setInputStream(socket.getInputStream());
        setOutputStream(socket.getOutputStream());
    }

    @Override
    public void finalize()
    {
        close();
    }

    // //////////////////////////////////////////////
    // Socket
    // //////////////////////////////////////////////


    private Socket socket = null;


    private void setSocket(Socket socket)
    {
        this.socket = socket;
    }

    public Socket getSocket()
    {
        return socket;
    }

    // //////////////////////////////////////////////
    // local address/port
    // //////////////////////////////////////////////


    public String getLocalAddress()
    {
        return getSocket().getLocalAddress().getHostAddress();
    }

    public int getLocalPort()
    {
        return getSocket().getLocalPort();
    }

    // //////////////////////////////////////////////
    // in/out
    // //////////////////////////////////////////////


    private InputStream sockIn = null;

    private OutputStream sockOut = null;

    private void setInputStream(InputStream in)
    {
        sockIn = in;
    }


    public InputStream getInputStream()
    {
        return sockIn;
    }


    private void setOutputStream(OutputStream out)
    {
        sockOut = out;
    }

    private OutputStream getOutputStream()
    {
        return sockOut;
    }

    // //////////////////////////////////////////////
    // open/close
    // //////////////////////////////////////////////

    public boolean open()
    {

        Socket sock = getSocket();
        try
        {

            sockIn = sock.getInputStream();

            sockOut = sock.getOutputStream();
        }
        catch (Exception e)
        {
            // TODO Add blacklistening of the UPnP Device
            return false;
        }
        return true;
    }

    public boolean close()
    {
        try
        {
            if (sockIn != null)
            {
                sockIn.close();
            }
            if (sockOut != null)
            {
                sockOut.close();
            }
            getSocket().close();
        }
        catch (Exception e)
        {
            // Debug.warning(e);
            return false;
        }
        return true;
    }

    // //////////////////////////////////////////////
    // post
    // //////////////////////////////////////////////


    private boolean post(HTTPResponse httpRes, byte content[],
            long contentOffset, long contentLength, boolean isOnlyHeader)
    {
        // TODO Check for bad HTTP agents, this method may be list for
        // IOInteruptedException and for blacklistening

        httpRes.setDate(Calendar.getInstance());

        OutputStream out = getOutputStream();

        try
        {

            httpRes.setContentLength(contentLength);

            out.write(httpRes.getHeader().getBytes());
            out.write(HTTP.CRLF.getBytes());


            if (isOnlyHeader == true)
            {
                out.flush();
                return true;
            }

            boolean isChunkedResponse = httpRes.isChunked();

            if (isChunkedResponse == true)
            {

                String chunSizeBuf = Long.toHexString(contentLength);

                out.write(chunSizeBuf.getBytes());
                out.write(HTTP.CRLF.getBytes());
            }

            out.write(content, (int) contentOffset, (int) contentLength);

            if (isChunkedResponse == true)
            {

                out.write(HTTP.CRLF.getBytes());

                out.write("0".getBytes());

                out.write(HTTP.CRLF.getBytes());
            }
            out.flush();
        }
        catch (Exception e)
        {
            // Debug.warning(e);
            return false;
        }

        return true;
    }


    private boolean post(HTTPResponse httpRes, InputStream in,
            long contentOffset, long contentLength, boolean isOnlyHeader)
    {
        // TODO Check for bad HTTP agents, this method may be list for
        // IOInteruptedException and for blacklistening

        try
        {
            httpRes.setDate(Calendar.getInstance());

            OutputStream out = getOutputStream();

            httpRes.setContentLength(contentLength);


            out.write(httpRes.getHeader().getBytes());


            out.write(HTTP.CRLF.getBytes());


            if (isOnlyHeader == true)
            {
                out.flush();
                return true;
            }

            boolean isChunkedResponse = httpRes.isChunked();

            if (0 < contentOffset)
            {

                in.skip(contentOffset);
            }

            int chunkSize = HTTP.getChunkSize();

            byte readBuf[] = new byte[chunkSize];
            long readCnt = 0;
            long readSize = (chunkSize < contentLength) ? chunkSize
                    : contentLength;
            int readLen = in.read(readBuf, 0, (int) readSize);

            while (0 < readLen && readCnt < contentLength)
            {
                if (isChunkedResponse == true)
                {

                    String chunSizeBuf = Long.toHexString(readLen);

                    out.write(chunSizeBuf.getBytes());


                    out.write(HTTP.CRLF.getBytes());
                }

                out.write(readBuf, 0, readLen);

                if (isChunkedResponse == true)
                {

                    out.write(HTTP.CRLF.getBytes());
                }
                readCnt += readLen;
                readSize = (chunkSize < (contentLength - readCnt)) ? chunkSize
                        : (contentLength - readCnt);
                readLen = in.read(readBuf, 0, (int) readSize);
            }


            if (isChunkedResponse == true)
            {

                out.write("0".getBytes());
                out.write(HTTP.CRLF.getBytes());
            }

            out.flush();


        }
        catch (IOException e)
        {
        }

        return true;
    }


    public boolean post(HTTPResponse httpRes, long contentOffset,
            long contentLength, boolean isOnlyHeader)
    {
        // TODO Close if Connection != keep-alive
        if (httpRes.hasContentInputStream() == true)
        {
            return post(httpRes, httpRes.getContentInputStream(),
                    contentOffset, contentLength, isOnlyHeader);
        }
        return post(httpRes, httpRes.getContent(), contentOffset,
                contentLength, isOnlyHeader);
    }
}
